The 'Wp My Admin Bar' Plugin expands on the default WordPress Admin Bar, adding 3 new quick access menus.
The Option Data display shows you exactly what is being stored on your WordPress install.
The "My Cache Option" contains the show/hide rules for the My Cache menu.
Output Buffering: The settings pages use ob_gzhandler to compress the output of the settings pages.
Transient Cache: Transients are used to store the results of the blog id query that builds the menus.
References: The WordPress Functions this Plugin utilizes.
Custom Settings Tab
** NOTE: Disabling this plugin does not remove the options. Deleting the plugin, through WordPress, deletes the options.